Because tryptophan is present in milk and warm milk helps some people feel drowsy, tryptophan became a much sought-after item for the treatment of insomnia at natural food stores. Yet some people who took tryptophan as a natural supplement developed a syndrome eosinophilia-myalgia syndrome (EMS). Some people died. Scientists later believed the deaths were the result of taking the amino acid tryptophan. Not everyone who took tryptophan, however, experienced these side effects. In addition, not everyone who took tryptophan received help for insomnia.
Complementary medicine ( CM ) or integrative medicine ( IM ) is when alternative medicine is used together with functional medical treatment, in a belief that it improves the effect of treatments. [n 7]     However, significant drug interactions caused by alternative therapies may instead negatively influence treatment, making treatments less effective, notably cancer therapy .   Both terms refer to use of alternative medical treatments alongside conventional medicine,    an example of which is use of acupuncture (sticking needles in the body to influence the flow of a supernatural energy), along with using science-based medicine, in the belief that the acupuncture increases the effectiveness or "complements" the science-based medicine.